Method of treating iron.



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JOHN KIRBY, OF IITTSBURGH, PENNSYLVANIA.

METHOD OF. TREATING IRON.

1 ,0? 9,129. No Drawing.

To all whom it may concern lie it known that I, JOHN Kmmna citizen of the United States of America, residing at Pittsburgh, in the county of Allegheny and State of tennsylvania, have invented certain new and useful Improvements in ltletiv ods of 'lreating Iron,-of which the following is a specification.

This invention relates to a method of treating iron and has for its object to pro vide a. method, in a manner as hereinafter set forth, to incorporate vanadium in much iron to increase the tensile strength of the latter.

Briefly described the method consists in feeding into a heat of muck iron contained in a paddling furnace about the time the cinder is boiled oil and before the iron is ready to ball, a composition including vanadium oxid combined with a reducingagent and an agent to increasethe combustion of the reducing agent, whereby the vanadium oxid will be reduced and be caused to horoughly incorporate with the iron thereby increasing the tensile strength of the latter.

A composition capable of carrying the method into effect consists of oxid of vanadiul'n, pulverized or granulated aluminum, iron rust, potassium chlorate, black oxicl of manganese and with or without barium dioxid.

The ingredients of the foregoing composition are ti'ioroughly mixed together and the preferred proportions of each ingredient by weight is as follows: oxid of vanadium 1 part, aluminum 1} to 5 part, iron rust 1} part, pota t; part. The composition is fed in the muck iron when the cinders are wholly or partly boiled off and up to betore the time to ball.

ii. the heat should at any time be too intense, manure and salt may be added, such addition reducing the heatand holding the iron in a thick mucky condition, the latter condition of the iron being the first state that the iron gets into when it changes from metallic pig iron into muck iron. The re action of aluminum and the iron rust generates suliicient heat for the aluminum to react upon the oxid of vanadium to reduce it.

The potassium chlorate and black ouid of Specification of Letters Patent.

Application filed October 11, 1912. Serial No. 725,206.

nun chlorate part, black oxid of art, and 1f the barium (llOXld.

manganese "with or without barium dioxid, throws oil a ure oxygen which starts the combustion o the aluminum to reduce the vanadium. The reduction of the vanadium in the muck iron due to the reaction of the aluminumnnd iron rust, changes the oxid of vanadium into metallic vanadium.

What I claim is:-

1. A method of increasing thetensile strength of iron consisting in feeding into a heat of muck iron about the time the cinder is partly or wholly boiled oil and before the time to ball, a composition including oxid of vanadium and aluminum.

. 2. A method of increasing the tensile strength of iron consisting in feeding into a heat of muck iron about the time the cinder is partly or wholly boiled off and up to be fore the time to ball, a composition including oxid of vanadium and a reducing agent therefor.

3. A method of increasing the tensile strength of iron consisting in feeding into a heat of muck iron about the time the cinder is partly or Wholly boiled oil' and up to bcfore the time to ball, a composition including oxid of vanadium, and a reducing agent therefor. and then holding the heat to main tain the iron in a thick mucky condition.

i. A method of increasing the tensile strength of iron consisting in feeding into a heat of iron about the time the cinder is partly or whollyboiled oll' oxid of vanadium and aluminum.

5. A. method of increasing the tensile strength oi iron consisting in feeding into a heat of iron about the time the cinder is partly or Wholly boiled oif oxid of vanadium and aluminum, and then governing the heat to hold the iron in a thick mucky condition.

ii. A method of increasing the tensile strength of iron consisting in feeding into a heat of iron about the time the cinder is partly or Wholly boiled oil' a composition including oxid of vanadium, aluminum and iron rust.

in testimony whereof I allix my signature in the presence of two witnesses.

JOHN KERRY.

W tnesses:

Max H. Suonovrrz, Karin-1m a i: lCnni-J'rr.

Patented N ov. 18, 1913. 

